How about an off/on option for the blue LED? It can be turned off in Ubuntu and Android.
The light is annoying… 
Other than that, great job!
a black felt pen, a few dabs and problem solved
Otherwise it can be added manually yourself using rc.local, this should work:
echo none > /sys/class/leds/blue\:heartbeat/triggerBut a radio button would add value and differentiate Volumio from other MPD options.
True, but then we get all the hardware-specific issues. It has to work on all boards, we try to stay away from board-specific programming. In this case I really don’t see an added value.